Compressor HVAC: Testing and Inspection

HEATING / AIR CONDITIONING: COMPRESSOR: INSPECTION

1. INSPECT MAGNET CLUTCH ASSEMBLY





(a) Check the magnet clutch operation.

(1) Confirm that the magnet clutch hub and magnet clutch rotor lock when the battery positive (+) lead is connected to terminal 3 of the magnet clutch and the negative (-) lead is connected to the ground wire.

If the operation is not as specified, replace the magnet clutch assembly.

(b) Measure the resistance between terminals 1 and 2.

Standard resistance:

65 to 125 Ohms at 20°C (68°F)

Text in Illustration





If the resistance is not as specified, replace the cooler compressor assembly.